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Annual Toxics Summary
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Chromium
nanograms per cubic meter
Year Months
Present
Minimum Median Mean 90th
Percentile
Maximum Standard
Deviation
Number of
Observations
Detection
Limit
2023
4.255 4.255 * 10 15 3.2 20 8.51
2022
4.255 4.255 * 10 12 2.7 28 8.51
2021
4.255 4.255 * 4.255 15 2.5 23 8.51
2020
4.255 * * * 11 3.1 7 8.51
2019
4.255 4.255 * 10 13 2.9 27 8.51
2018
4.255 4.255 6.5 11 15 3.3 31 8.51
2017
4.255 4.255 6.0 10 13 2.9 31 8.51
2016
4.255 4.255 * 4.255 18 2.9 32 8.51
2015
4.255 4.255 4.5 4.255 9 1.0 30 8.51
2014
3.4 3.4 4.0 8 9 1.6 31 6.8
2013
4 4 * 3 9 1.2 28 3
2012
1.5 1.5 * 6 6 1.8 18 3
2011
* * * * * * 0 *
2010
* * * * * * 0 *
2009
* * * * * * 0 *
2008
* * * * * * 0 *
2007
* * * * * * 0 *
2006
* * * * * * 0 *
2005
* * * * * * 0 *
2004
* * * * * * 0 *
2003
* * * * * * 0 *
2002
* * * * * * 0 *
2001
* * * * * * 0 *
2000
* * * * * * 0 *
1999
* * * * * * 0 *
1998
* * * * * * 0 *
1997
* * * * * * 0 *
1996
* * * * * * 0 *
1995
* * * * * * 0 *
1994
* * * * * * 0 *
1993
* * * * * * 0 *
1992
* * * * * * 0 *
1991
* * * * * * 0 *
1990
* * * * * * 0 *
1989
* * * * * * 0 *
Graph It!
Notes Values below the Limit of Detection (LoD) assumed to be ½ LoD.
Means and risks shown only for years with data in all 12 months.
"*" means there was insufficient or no data available to determine the value.